Ksport BKHD080-621SO ProComp Big Brake Kit with Floating Rotor 4, 6, or 8 Piston Caliper

The Ksport BKHD080-621SO ProComp Big Brake Kit delivers a significant upgrade in stopping performance over stock braking systems. Engineered with advanced brake technology, this kit substantially reduces brake fade while continuously cooling and refreshing the brake pad surface during braking. The system is designed as a bolt-on upgrade requiring minimal tools in most applications.

Lightweight One-Piece Caliper Construction:

• CNC-machined from aircraft-grade billet aluminum in a one-piece design — no casting or welding — for uniform strength and corrosion resistance
• Differential bore configuration for optimized clamping force
• Each caliper weighs just over 5 lbs., dramatically reducing unsprung weight
• Machined-in bridge tube protection grooves for added durability
• Aluminum pistons for superior heat resistance and consistent performance
• High-temperature seals and stainless-steel brake pad wear plates standard on every caliper
• Available in 4, 6, or 8 piston configurations

Floating Two-Piece Rotor Design:

• Two-piece disc assembly reduces both rotating and unsprung weight — rotors can weigh up to 50% less than OEM equivalents of the same size
• Floating outer disc section shifts slightly as needed for better self-centering in the caliper, lowering brake drag and improving braking evenness
• Eliminates thermal stress warping and braking surface cupping caused by extreme heat
• Unique slot pattern expels gas and pad debris faster than conventional slot designs, reducing braking noise
• Every rotor is heat-treated and precision-balanced before shipment
• Available in Cross Drilled or Slotted finish — cross drilled recommended for daily driving; slotted recommended for track-heavy use

Complete System Components:

• Opposed piston caliper design for improved pad wear and superior caliper rigidity versus OEM
• DOT-compliant stainless-steel braided brake lines prevent expansion under pressure, delivering a firmer pedal feel and quicker response than stock rubber lines
• NAOC Ceramic brake pads included — optimal operating range of 194°F–1,022°F, reducing brake dust by 50% or more versus race pads
• OEM ABS systems remain fully functional with this kit installed
• Backed by a 12-month warranty covering manufacturer defects

The Ksport ProComp Big Brake Kit is a proven performance upgrade for street and occasional track use, combining significant weight reduction, advanced thermal management, and dramatically increased stopping power in a straightforward bolt-on package.